GeForce GTX 660 Ti vs Radeon HD 6990
Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 660 Ti and Radeon HD 6990. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 660 Ti and Radeon HD 6990. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
Main Specs
GeForce GTX 660 Ti
Radeon HD 6990
Power consumption (TDP)
150 Watt
375 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
Two 6-pin
2x 8-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 4x mini-DisplayPort
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Radeon HD 6990 has 150% more power consumption, than GeForce GTX 660 Ti.
GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Radeon HD 6990 uses PCIe 2.0 x16 interface.
GeForce GTX 660 Ti and Radeon HD 6990 have maximum RAM of 2 GB.
Both cards are used in Desktops.
GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 6990 - with TeraScale 3.
Core clock speed of GeForce GTX 660 Ti is 85 MHz higher, than Radeon HD 6990.
GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Radeon HD 6990 - by 40 nm process technology.
Radeon HD 6990 is 286 mm longer, than GeForce GTX 660 Ti.
Memory clock speed of Radeon HD 6990 is 4994 MHz higher, than GeForce GTX 660 Ti.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
21−24
14−16
ultra / 1080p
12−14
9−10
QHD / 1440p
8−9
3−4
4K / 2160p
5−6
−
low / 720p
40−45
30−35
medium / 1080p
27−30
18−20
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 53% more, than Radeon HD 6990.
high / 1080p
35−40
24−27
ultra / 1080p
30−35
21−24
QHD / 1440p
14−16
7−8
4K / 2160p
9−10
5−6
low / 720p
70−75
50−55
medium / 1080p
40−45
27−30
The average gaming FPS of GeForce GTX 660 Ti in Battlefield 5 is 47% more, than Radeon HD 6990.
low / 768p
50−55
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GTX 660 Ti in Call of Duty: Warzone is 10% more, than Radeon HD 6990.
low / 768p
230−240
210−220
medium / 768p
210−220
170−180
ultra / 1080p
120−130
95−100
QHD / 1440p
100−110
50−55
4K / 2160p
55−60
30−33
high / 768p
170−180
140−150
The average gaming FPS of GeForce GTX 660 Ti in Counter-Strike: Global Offensive is 27% more, than Radeon HD 6990.
low / 768p
60−65
55−60
ultra / 1080p
55−60
40−45
medium / 1080p
55−60
45−50
The average gaming FPS of GeForce GTX 660 Ti in Cyberpunk 2077 is 20% more, than Radeon HD 6990.
low / 768p
120−130
110−120
medium / 768p
110−120
90−95
ultra / 1080p
85−90
60−65
The average gaming FPS of GeForce GTX 660 Ti in Dota 2 is 21% more, than Radeon HD 6990.
high / 1080p
27−30
18−20
ultra / 1080p
24−27
16−18
QHD / 1440p
20−22
−
4K / 2160p
9−10
6−7
low / 720p
55−60
35−40
medium / 1080p
30−33
18−20
The average gaming FPS of GeForce GTX 660 Ti in Far Cry 5 is 57% more, than Radeon HD 6990.
high / 1080p
35−40
24−27
ultra / 1080p
27−30
18−20
QHD / 1440p
16−18
16−18
low / 720p
130−140
95−100
medium / 1080p
75−80
50−55
The average gaming FPS of GeForce GTX 660 Ti in Fortnite is 40% more, than Radeon HD 6990.
high / 1080p
35−40
24−27
ultra / 1080p
27−30
20−22
QHD / 1440p
16−18
9−10
4K / 2160p
14−16
−
low / 720p
75−80
50−55
medium / 1080p
40−45
27−30
The average gaming FPS of GeForce GTX 660 Ti in Forza Horizon 4 is 48% more, than Radeon HD 6990.
low / 768p
110−120
85−90
medium / 768p
95−100
75−80
high / 1080p
45−50
30−33
ultra / 1080p
18−20
12−14
QHD / 1440p
9−10
3−4
The average gaming FPS of GeForce GTX 660 Ti in Grand Theft Auto V is 35% more, than Radeon HD 6990.
high / 1080p
14−16
9−10
ultra / 1080p
10−12
7−8
QHD / 1440p
10−12
−
4K / 2160p
3−4
2−3
low / 720p
40−45
27−30
medium / 1080p
20−22
12−14
The average gaming FPS of GeForce GTX 660 Ti in Metro Exodus is 50% more, than Radeon HD 6990.
low / 768p
120−130
110−120
ultra / 1080p
−
100−110
medium / 1080p
110−120
100−110
The average gaming FPS of GeForce GTX 660 Ti in Minecraft is 9% more, than Radeon HD 6990.
high / 1080p
−
21−24
ultra / 1080p
14−16
18−20
low / 720p
75−80
55−60
medium / 1080p
18−20
24−27
The average gaming FPS of GeForce GTX 660 Ti in PLAYERUNKNOWN'S BATTLEGROUNDS is 8% more, than Radeon HD 6990.
high / 1080p
16−18
14−16
ultra / 1080p
10−12
9−10
QHD / 1440p
3−4
0−1
4K / 2160p
2−3
−
low / 720p
40−45
27−30
medium / 1080p
21−24
16−18
The average gaming FPS of GeForce GTX 660 Ti in Red Dead Redemption 2 is 35% more, than Radeon HD 6990.
low / 768p
80−85
55−60
medium / 768p
50−55
30−35
high / 1080p
27−30
18−20
ultra / 1080p
16−18
10−12
4K / 2160p
9−10
8−9
The average gaming FPS of GeForce GTX 660 Ti in The Witcher 3: Wild Hunt is 52% more, than Radeon HD 6990.
low / 768p
90−95
100−110
medium / 768p
60−65
60−65
ultra / 1080p
40−45
35−40
high / 768p
55−60
50−55
The average gaming FPS of Radeon HD 6990 in World of Tanks is 1% more, than GeForce GTX 660 Ti.
Full Specs
GeForce GTX 660 Ti
Radeon HD 6990
Architecture
Kepler
TeraScale 3
Code name
GK104
Antilles
Type
Desktop
Desktop
Release date
16 August 2012
8 March 2011
Pipelines
1344
1536
Core clock speed
915 MHz
830 MHz
Boost Clock
980 MHz
Transistor count
3,540 million
2,640 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
102.5 billion/sec
79.68
Floating-point performance
2,459.5 gflops
2x 2,549.8 gflops
Length
9.5" (24.1 cm)
295 mm
Memory bus width
192-bit GDDR5
256 Bit
Memory clock speed
6.0 GB/s
5000 MHz
Memory bandwidth
144.2 GB/s
160.0 GB/s
Shared memory
-
DirectX
12 (11_0)
11.2 (11_0)
Shader Model
5.1
5.0
OpenGL
4.3
4.4
OpenCL
1.2
1.2
Vulkan
1.1.126
N/A
CUDA
+
CUDA cores
1344
Bus support
PCI Express 3.0
Height
4.376" (11.1 cm)
SLI options
+
Multi monitor support
4 displays
HDMI
+
HDCP
+
Maximum VGA resolution
2048x1536
Audio input for HDMI
Internal
3D Blu-Ray
+
3D Gaming
+
3D Vision
+
Bitcoin / BTC (SHA256)
99 Mh/s
265 Mh/s
Ethereum / ETH (DaggerHashimoto)
24 Mh/s
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